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Adjustable Drive Half Shaft Constrained Modal Test Fixture

A technology for driving half shafts and restraining modals. It is applied in the testing of measuring devices, workpiece clamping devices, and mechanical components. It can solve problems such as performance evaluation and constrained modal testing, and achieve the effect of simple operation.

Active Publication Date: 2016-02-03
CHONGQING CHANGAN AUTOMOBILE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, in addition to the modal test of the driving half shaft on the whole vehicle, there is no special device for the constrained modal test of its single body, which makes it impossible to test the drive half shaft in the early stage of project development, that is, when there is no hybrid vehicle or tooling vehicle. Drive axle tooling for performance evaluation

Method used

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  • Adjustable Drive Half Shaft Constrained Modal Test Fixture
  • Adjustable Drive Half Shaft Constrained Modal Test Fixture
  • Adjustable Drive Half Shaft Constrained Modal Test Fixture

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Embodiment Construction

[0017] In order to further explain the technical solution of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] see Figure 1 to Figure 6 , the adjustable driving half-shaft constrained modal test fixture includes a strip-shaped base 2 , a fixed bracket 1 and a moving bracket 3 . The fixed bracket 1 is fixed on one end of the base 2 by bolts 8 . The middle part of the fixed bracket 1 is provided with the first assembly hole 13 which is U-shaped in cross section along the longitudinal direction of the base, and the first T-shaped groove 11 is provided on the top of the fixed bracket 1 along the longitudinal direction of the base, and the first T-shaped groove 11 and the first assembly The hole 13 communicates, and its wide groove is below the narrow groove. The first bolt assembly 9 matched with it is arranged in the first T-shaped groove 11. The first bolt assembly 9 is composed of a bolt and ...

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Abstract

The invention discloses an adjustable fixing device for constraint modal testing of driving half axles. The adjustable fixing device comprises a base, a fixed support and a movable support. The fixed support is fixed to one end of the base through bolts. The movable support is arranged at the other end of the base and can be in slide fit with the base. The fixed support and the movable support are provided with assembling holes where the driving half axles are installed. The driving half axle of different types can be positioned through bolt assemblies arranged on the fixed support and bolt assemblies arranged on the movable support. By means of the fixing device, the driving half axles with different lengths, different radiuses and different installation angles can be reliably fixed, and therefore the states of the driving half axles on a whole vehicle can be simulated, modal testing can be conducted on the driving half axles, and the NVH performance of the driving half axles of different types can be evaluated at the earlier stage of the project development.

Description

technical field [0001] The invention relates to a fixture for testing automobile components, and more particularly relates to a fixture for an adjustable drive half-shaft constrained mode test. Background technique [0002] With the development of automobile technology, people have higher and higher requirements on the noise level of automobiles. As one of the main reasons for the roaring noise, the resonance of the driving half shaft of the automobile has a relatively important impact on the sound quality of the interior of the car. According to previous tests, it can be concluded that when a vehicle is installed with a drive axle with a higher modality, its interior noise is significantly better than that of a drive axle with a lower modality; The mode of the driving half shaft of the better model is generally higher, so it can be seen that the mode of the driving half shaft has an important influence on the NVH performance. However, at present, in addition to the modal t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B11/00G01M13/00
CPCB25B11/00G01M13/00
Inventor 周翠李宏成田雄夏元烽张志军
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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